Ariz. Rev. Stat. § 34-104
B. An architect shall not use and the agent shall not allow the use of bidding, contracting or purchasing specifications proprietary to one supplier, distributor or manufacturer unless the specification includes both of the following:
C. Persons desiring to submit alternative product proposals for prior approval of the architect shall submit such proposals at least eight days prior to the original deadline for receiving bids. The architect shall consider and either approve or reject all proposals submitted and shall comply with the following requirements: